alyssababy7
Find the exact value of the expression. Do not use a calculator. If tan θ = 9, find the exact value of cot (pi/2  θ)



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alyssababy7
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A. 8
B. 10
C. 1/9
D. 9

anonymous
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don't be fooled, it is the cofunction identity
\[\cot(\frac{\pi}{2}\theta)=\tan(\theta)\]

anonymous
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therefore if \(\tan(\theta)=9\) you know \(\cot(\frac{\pi}{2}\theta)=9\) also

alyssababy7
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thank you

amruta1997
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its d) 9

amruta1997
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yes

amruta1997
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too simple